Multidisciplinary Optimization Design System Development For Power Station Valve

Among the power plant equipments, power station valves as the key components control and regulate the flow and pressure of the medium inside the tubes, to ensure power plant equipments normal and safe working, which are important guarantee for the entire power plant to stabilize operation. Improving the designing quality and shorten the research and development cycle of power station valves has become the key of the enterprises to enhance their competitiveness. Therefore, developing platform with rapid design of three-dimensional model, multi-disciplinary finite element characterization and multi-disciplinary optimization design for power station valves has important theoretical significance and practical value.In this paper, CAX and MDO are integrated according to the design characteristics of the power station valves, meanwhile, circulation and sharing of data are solved by transferring and managing model data based on database completing the development of multidisciplinary design optimization system of the power station valves, concrete contents as follows:First, according to the design requirements of the power station valves, the object-oriented design ideas is used in the system based on the functional analysis and comprehensive analysis of design ideas of domestic and foreign outstanding CAX integrated platform, to put forward a framework with modularity and sharing of multidisciplinary optimization design system.As the characteristics of components of the power station valves, establishing the database with model characteristic parameters is to be the memory of the bottom data, data transfer between design platforms is realized using the database, and resource sharing is implemented through the net.Rapid modeling and modification of model for each component of the valves and automatic assembly of the whole machine are realized by UG secondary development. Utilization of model simplified technology to develop intelligent simplified module of model that traverses the model features automatically to simplify fine characteristics such as chamfers, small holes. It increases the success rate of model transformation between CAD and FEA, and improves the analysis efficiency of CAE.Multidisciplinary features analysis of structure, thermal stress, flow field and modal on power station valves and their components is carried on by ANSYS, integrating VC++developing environment by editing APDL design language is to develop ANSYS secondarily, and encapsulate the entire finite element operation that let automatic operate, solving complicated finite element operation flow. Developing ANSYS process monitoring controller to monitor design progress constantly.Applying iSIGHT to integrate ANSYS is for multidisciplinary optimization design of power station valves and to achieve the multidisciplinary coupling optimization such as structure of modal and flow field. Design example based on DN26stop valve test the optimal results and validate design results through physical prototypes.